Patents by Inventor Khil Ohk Kang

Khil Ohk Kang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9508412
    Abstract: A semiconductor memory apparatus includes a bank; a temperature sensor configured to generate a temperature voltage of which voltage level is changed according to a temperature variation of the bank; and a timing control block configured to control a timing of a signal to be inputted to the bank, according to the voltage level of the temperature voltage.
    Type: Grant
    Filed: October 1, 2015
    Date of Patent: November 29, 2016
    Assignee: SK HYNIX INC.
    Inventor: Khil Ohk Kang
  • Publication number: 20160027487
    Abstract: A semiconductor memory apparatus includes a bank; a temperature sensor configured to generate a temperature voltage of which voltage level is changed according to a temperature variation of the bank; and a timing control block configured to control a timing of a signal to be inputted to the bank, according to the voltage level of the temperature voltage.
    Type: Application
    Filed: October 1, 2015
    Publication date: January 28, 2016
    Inventor: Khil Ohk KANG
  • Patent number: 9177618
    Abstract: A semiconductor memory apparatus includes a bank; a temperature sensor configured to generate a temperature voltage of which voltage level is changed according to a temperature variation of the bank; and a timing control block configured to control a timing of a signal to be inputted to the bank, according to the voltage level of the temperature voltage.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: November 3, 2015
    Assignee: SK Hynix Inc.
    Inventor: Khil Ohk Kang
  • Publication number: 20140140150
    Abstract: A semiconductor memory apparatus includes a bank; a temperature sensor configured to generate a temperature voltage of which voltage level is changed according to a temperature variation of the bank; and a timing control block configured to control a timing of a signal to be inputted to the bank, according to the voltage level of the temperature voltage.
    Type: Application
    Filed: March 18, 2013
    Publication date: May 22, 2014
    Inventor: Khil Ohk KANG
  • Patent number: 8559245
    Abstract: An internal voltage generating circuit of a semiconductor memory apparatus includes a first voltage generating unit to output a first output voltage to a common node, the first output voltage is generated in response to a first reference voltage, and a second voltage generating unit to output a second output voltage to the common node, the second output voltage is generated in response to a second reference voltage.
    Type: Grant
    Filed: December 9, 2008
    Date of Patent: October 15, 2013
    Assignee: SK hynix Inc.
    Inventors: Khil-Ohk Kang, Kyung-Whan Kim
  • Patent number: 8487603
    Abstract: A voltage generating circuit of semiconductor integrated circuit includes: a voltage controller that detects the level of an external supply voltage and outputs a voltage control signal; a voltage supplier that outputs the external supply voltage or a first internal voltage in response to the voltage control signal; and a first reference voltage generator that is supplied with an output voltage of the voltage supplier and generates a first reference voltage.
    Type: Grant
    Filed: July 3, 2007
    Date of Patent: July 16, 2013
    Assignee: Hynix Semiconductor Inc.
    Inventor: Khil-Ohk Kang
  • Patent number: 8461859
    Abstract: A semiconductor device includes a common probing pad; an internal voltage generation unit having a plurality of internal voltage generation blocks configured to generate a plurality of internal voltages; and a probing voltage selection unit configured to transfer an internal voltage selected from the internal voltages to the common probing pad in response to a plurality of voltage selection signals.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: June 11, 2013
    Assignee: Hynix Semiconductor Inc.
    Inventor: Khil-Ohk Kang
  • Patent number: 8446790
    Abstract: A reference voltage supplying circuit can include an internal reference voltage generating unit configured to generate an internal reference voltage, a pad configured to receive an external reference voltage, a switching unit selectively configured to supply the internal reference voltage or the external reference voltage to an internal voltage generator in a test mode.
    Type: Grant
    Filed: July 25, 2011
    Date of Patent: May 21, 2013
    Assignee: SK hynix Inc.
    Inventor: Khil-Ohk Kang
  • Patent number: 8368460
    Abstract: An internal voltage generation circuit includes an internal reference voltage generation unit configured to generate first and second reference voltages, a core voltage generation unit configured to receive the first reference voltage and to generate a core voltage based on the first reference voltage, and a bit line pre-charge voltage generation unit configured to receive the second reference voltage and to generate a bit-line pre-charge voltage based on the second reference voltage.
    Type: Grant
    Filed: December 29, 2010
    Date of Patent: February 5, 2013
    Assignee: Hynix Semiconductor Inc.
    Inventor: Khil-Ohk Kang
  • Patent number: 8350554
    Abstract: A semiconductor device includes: a first reference voltage generator for generating a first reference voltage; a first band gap circuit for dividing a voltage at a second reference voltage output node to produce a first and a second band gap voltages having a property relative to temperature variations; a first comparator for receiving the first reference voltage as a bias input and comparing the first band gap voltage with the second band gap voltage; and a first driver for pull-up driving the second reference voltage output node in response to an output signal of the first comparator.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: January 8, 2013
    Assignee: Hynix Semiconductor Inc.
    Inventors: Khil-Ohk Kang, Sang-Jin Byeon
  • Patent number: 8339871
    Abstract: Herein, a voltage sensing circuit, which is capable of controlling a pumping voltage to be stably generated in a low voltage environment, is provided. The voltage sensing circuit includes a current mirror having first and second terminals, a first switching element configured to control current on the first terminal of the current mirror by a reference voltage, a second switching element configured to control current from the second terminal of the current mirror in response to a pumping voltage, and a third switching element configured to control current sources of the first and second switching elements to receive a negative voltage.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: December 25, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventors: Woo-Seung Han, Khil-Ohk Kang
  • Patent number: 8270232
    Abstract: A reference voltage selecting unit selectively outputs a first external reference voltage and a second external reference voltage as a selection reference voltage in accordance with whether to perform a wafer test. An address buffer generates an internal address by buffering an external address in accordance with the selection reference voltage. A command buffer generates an internal command by buffering an external command in accordance with the selection reference voltage. A data buffer generates internal data by buffering to an external data in accordance with the second external reference voltage.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: September 18, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventor: Khil-Ohk Kang
  • Patent number: 8203891
    Abstract: A voltage sensing circuit, which is capable of controlling a pumping voltage to be stably generated in a low voltage environment, is provided. The voltage sensing circuit includes a current mirror having first and second terminals, a first switching element configured to control current on the first terminal of the current mirror by a reference voltage, a second switching element configured to control current from the second terminal of the current mirror in response to a pumping voltage, and a third switching element configured to control current sources of the first and second switching elements to receive a negative voltage.
    Type: Grant
    Filed: May 5, 2011
    Date of Patent: June 19, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventors: Woo-Seung Han, Khil-Ohk Kang
  • Patent number: 8194476
    Abstract: A semiconductor memory device includes a voltage detector configured to detect a level of an external power supply voltage and an internal voltage generator configured to generate an internal voltage in response to an active signal and drive an internal voltage terminal with a driving ability corresponding to an output signal of the voltage detector. A method for operating the semiconductor memory device includes detecting a level of an external power supply voltage, based on a first target level, to output a detection signal; and generating an internal voltage in response to an active signal, and driving an internal voltage terminal with a driving ability corresponding to the detection signal.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: June 5, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventor: Khil-Ohk Kang
  • Publication number: 20120105141
    Abstract: An internal voltage generation circuit includes an internal reference voltage generation unit configured to generate first and second reference voltages, a core voltage generation unit configured to receive the first reference voltage and to generate a core voltage based on the first reference voltage, and a bit line pre-charge voltage generation unit configured to receive the second reference voltage and to generate a bit-line pre-charge voltage based on the second reference voltage.
    Type: Application
    Filed: December 29, 2010
    Publication date: May 3, 2012
    Inventor: Khil-Ohk KANG
  • Patent number: 8149633
    Abstract: A semiconductor memory device is provided which includes a voltage detecting unit configured to compare a target voltage level with a fed-back internal voltage to output a detection signal in a normal mode, a driving unit configured to selectively drive an internal voltage terminal to a first or second power supply voltage according to an operation mode in response to the detection signal, and an enable control unit configured to control the driving unit in response to a control signal corresponding to the operation mode.
    Type: Grant
    Filed: July 18, 2011
    Date of Patent: April 3, 2012
    Assignee: Hynix Semiconductor Inc.
    Inventor: Khil-Ohk Kang
  • Publication number: 20120014203
    Abstract: A reference voltage selecting unit selectively outputs a first external reference voltage and a second external reference voltage as a selection reference voltage in accordance with whether to perform a wafer test. An address buffer generates an internal address by buffering an external address in accordance with the selection reference voltage. A command buffer generates an internal command by buffering an external command in accordance with the selection reference voltage. A data buffer generates internal data by buffering to an external data in accordance with the second external reference voltage.
    Type: Application
    Filed: September 23, 2011
    Publication date: January 19, 2012
    Applicant: Hynix Semiconductor Inc.
    Inventor: Khil Ohk Kang
  • Publication number: 20110280087
    Abstract: A reference voltage supplying circuit can include an internal reference voltage generating unit configured to generate an internal reference voltage, a pad configured to receive an external reference voltage, a switching unit selectively configured to supply the internal reference voltage or the external reference voltage to an internal voltage generator in a test mode.
    Type: Application
    Filed: July 25, 2011
    Publication date: November 17, 2011
    Applicant: HYNIX SEMICONDUCTOR, INC.
    Inventor: Khil Ohk KANG
  • Publication number: 20110273924
    Abstract: A semiconductor memory device is provided which includes a voltage detecting unit configured to compare a target voltage level with a fed-back internal voltage to output a detection signal in a normal mode, a driving unit configured to selectively drive an internal voltage terminal to a first or second power supply voltage according to an operation mode in response to the detection signal, and an enable control unit configured to control the driving unit in response to a control signal corresponding to the operation mode.
    Type: Application
    Filed: July 18, 2011
    Publication date: November 10, 2011
    Inventor: Khil-Ohk KANG
  • Patent number: 8054695
    Abstract: A reference voltage selecting unit selectively outputs a first external reference voltage and a second external reference voltage as a selection reference voltage in accordance with whether to perform a wafer test. An address buffer generates an internal address by buffering an external address in accordance with the selection reference voltage. A command buffer generates an internal command by buffering an external command in accordance with the selection reference voltage. A data buffer generates internal data by buffering an external data in accordance with the second external reference voltage.
    Type: Grant
    Filed: June 30, 2009
    Date of Patent: November 8, 2011
    Assignee: Hynix Semiconductor Inc.
    Inventor: Khil Ohk Kang